watchdog: imx2_wdt: Check for clk_prepare_enable() error
clk_prepare_enable() may fail, so we should better check its return value
and propagate it in the case of error.
Signed-off-by: Fabio Estevam <fabio.estevam@freescale.com>
Reviewed-by: Guenter Roeck <linux@roeck-us.net>
Signed-off-by: Wim Van Sebroeck <wim@iguana.be>
diff --git a/drivers/watchdog/imx2_wdt.c b/drivers/watchdog/imx2_wdt.c
index 2acdd17..add1fa0 100644
--- a/drivers/watchdog/imx2_wdt.c
+++ b/drivers/watchdog/imx2_wdt.c
@@ -260,7 +260,9 @@
wdog->max_timeout = IMX2_WDT_MAX_TIME;
wdog->parent = &pdev->dev;
- clk_prepare_enable(wdev->clk);
+ ret = clk_prepare_enable(wdev->clk);
+ if (ret)
+ return ret;
regmap_read(wdev->regmap, IMX2_WDT_WRSR, &val);
wdog->bootstatus = val & IMX2_WDT_WRSR_TOUT ? WDIOF_CARDRESET : 0;
@@ -365,8 +367,11 @@
{
struct watchdog_device *wdog = dev_get_drvdata(dev);
struct imx2_wdt_device *wdev = watchdog_get_drvdata(wdog);
+ int ret;
- clk_prepare_enable(wdev->clk);
+ ret = clk_prepare_enable(wdev->clk);
+ if (ret)
+ return ret;
if (watchdog_active(wdog) && !imx2_wdt_is_running(wdev)) {
/*